package com.windchimes.edueval_platform.config;

import com.windchimes.edueval_platform.common.JacksonObjectMapper;
import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;

import java.util.List;

@Slf4j
@Configuration
public class WebMvcConfig extends WebMvcConfigurationSupport {
//    /**
//     *设置静态资源映射
//     * @param registry
//     */
//    @Override
//    protected void addResourceHandlers(ResourceHandlerRegistry registry) {
//        log.info("开始进行静态资源映射...");
//        registry.addResourceHandler("/backend/**").addResourceLocations("classpath:/backend/");
//        registry.addResourceHandler("/front/**").addResourceLocations("classpath:/front/");
//
//
//    }

    /**
     * 扩展MVC框架的消息转换器
     */
    @Override
    protected void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
        log.info("开始使用扩展消息转换器");
        //创建消息转换器对象
        MappingJackson2HttpMessageConverter messageConverter = new MappingJackson2HttpMessageConverter();
        //设置对象转换器，底层使用Jackson将Java对象转换为json
        messageConverter.setObjectMapper(new JacksonObjectMapper());
        //将上面的消息转换器对象追加到MVC框架的转换器集合中
        //把转换器的优先级设置成0，优先使用自定义的转换器
        converters.add(0,messageConverter);
    }
}
